Vent means for oil-burning furnaces



March 27, 1951 A. J. RITTER 2,545,409

VENT MEANS FOR OIL BURNING FURNACES Filed D80. 14, 1948 INVENTOR. ALDENJ. E/TTEIQ ye/21 5 A? Patented Mar. 27, 1951 VENT MEANS FOR OIL-BURNINGFURNACES Alden J. Ritter, Elyria, Ohio, assignor to The C. A. OlsenManufacturing Company, Elyria, Ohio, a corporation of Ohio ApplicationDecember 14, 1948, Serial No. 65,170

1 1 Claim.

This invention relates to oil burning furnaces wherein the combustionchamber of the furnace is served b an atomizing burner which includes aprimary air blower.

In such a furnace it is known as desirable to provide vent means forcombustion chamber pressure relief and to permit influx of a smallamount of secondary air, for prevention of noise upon starting theburner, by damping of the pulsation within the chamber.

The principal general object of this invention is to so relate such ventmeans with the inlet of the blower, that combustion chamber contentshaving egress through such vent means will be sucked into the blowerinlet, and the space within which the furnace is located will,therefore, be purged of objectionable fumes.

Other objects of the invention are to so arrange the vent means and theblower inlet, that their presence as well as their described functionalrelation is inconspicuous.

Further objects and advantages will be apparent from the followingdescription taken in connection with the accompanying drawing in which:

Fig. 1 is a view generally in side elevation showing pertinent parts ofa furnace equipped with an oil burner, in an arrangement embodying theinvention, parts being broken away to show details of construction, and

Fig. 2 is an enlarged perspective view illustrating location of ventopenings in the furnace observation door frame appearing in Fig. 1.

With reference now to the drawings, the furnace rests upon a floor l andincludes a body 2 enclosing the usual combustion chamber and housedwithin the usual jacket of which 3 indicates the front wall. A radiationshield 4 may be provided about the furnace body 2.

The furnace is provided with combustion chamber access and observationdoor means, and its combustion chamber is served by a burner, asgenerally indicated at A and B respectively; a panel or plate 3a beingprovided on the furnace wall 3 for mounting and interrelating suchparts.

More particularly as to the door means A, it includes a flanged circularframe 5, mounted on the plate 3a, and extending forwardly therefrom forsupport of a door 8 mounted thereon as by hinging at 1. A tunnelconnection 8 interconnects a suitable opening in the furnace wall withthat of the frame 5.

Vent openings 9 are provided in the bottom portion of the frame 5, whichthus are effective, by way of the connection 8 for admission of a slightamount of secondary air to the combustion chamber of the furnace.

As to the burner B, it is mounted on the plate 3a to serve the furnacecombustion chamber by way of the tunnel Ill. The burner includes blowermeans having an impeller wheel I I within a housing l2, the latter beingforwardly spaced from the plate 3a to. provide an air inlet space [3, sothat operation of the burner by its usual motor M for driving theimpeller I I, will eifect flow of primary combustion air into thefurnace as indicated by the arrows in Fig. 1.

As will be appreciated by one familiar with the art, the burner Busually includes other parts such as fuel atomizing nozzle means withinthe tunnel l0, and ignition means therefor, forming no part of thepresent invention and, therefore, not herein illustrated.

The burner B is located directly beneath the door means A so that itseffective air inlet opening, which is uppermost between the blowerhousing l2 and the plate 3a, is adjacent the bottom vent openings 9 inthe overhanging collar 5.

Thus, any fumes having egress from the com-- bustion chamber of thefurnace by way of the openings 9, will be sucked into the primary airstream produced by the blower means, as indicated by the feathered arrowin Fig. 1. Consequently, the space within which the furnace is locatedwill be purged of such fumes, by their immediate return to thecombustion chamber substantially without dissipation into such space.

What I claim is:

In a furnace including an upright panel, a combustion chamber behindsaid panel, and oil burner means for said cumbustion chamber andincluding blower means located in slightly spaced relation to the frontof said panel with its air inlet opening leading from the spacetherebetween: observation door means for said combustion chamberincluding a door frame extending forwardly of said panel above andadjacent said space, and a door mounted on said frame at the forwardextremity thereof, said frame having a vent opening located in itsbottom portion between said panel and said door, whereby said openingsare concealed, yet provide a direct and short path therebetween forreturn purge of vented combustion chamber contents.

ALDEN J. RITTER.-

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,078,884 Volmer Apr. 27, 19372,140,088 MacDonald Dec. 13, 1938 2,240,161 Mueller Apr. 29, 19412,240,531 Walker May 6, 1941 2,245,586 Holmann June 17, 1941 2,262,525De Lancey Nov. 11, 1941 2,329,272 Jorolemon Sept. 14, 1943 2,357,622Wiser Sept. 5, 1944

